rsi
Relative Strength Index
rsi(source, periods, matype="wilder")
Parameters
| Name | Type | Description |
|---|---|---|
source |
field | Data series (commonly close) |
periods |
int | Number of periods for gain/loss smoothing |
Formula
RSI = 100 - (100 / (1 + RS)); RS = MA(gain(source), periods) / MA(loss(source), periods)Examples
// overbought condition (RSI above 70)
rsi(close, 14) > 70;// oversold condition (RSI below 30)
rsi(close, 14) < 30;// RSI exiting overbought zone
crossunder(rsi(close, 14), 70);// RSI with EMA smoothing instead of Wilder
rsi(close, 14, matype="ema") > 50;Returns
float
Range
periods is bound by matype's MA family: 2-210 ema, 2-105 wilder (default), or 2-400 windowed sma/wma
Notes
Returns 100 rather than dividing by zero when avg_loss is exactly zero